Jake Long opted to sign with the Rams over remaining with the Dolphins. / Robert Mayer, USA TODAY Sports

by Jarrett Bell, USA TODAY Sports

by Jarrett Bell, USA TODAY Sports

After contemplating multiple last-minute offers, the free agent left tackle agreed to a four-year, $36 million contract with the St. Louis Rams on Sunday night, a person with knowledge of the deal told USA TODAY Sports.

Rams general manager Les Snead confirmed the move shortly after the news broke in an interview with USA TODAY Sports.

"We wanted to add a good, veteran pass-blocker and run-blocker who could add something special physically and spiritually to our room," Snead said.

Long, the No. 1 overall pick in the 2008 NFL Draft, rejected an offer to remain with the Miami Dolphins. During a visit with the Rams last week, he passed a physical that cleared up any concerns of lingering effects from triceps surgery.

Snead said he had confidence in St. Louis' pitch and that he wasn't worried about what the Dolphins could offer.

"You don't get nervous, because you respect that person," Snead said. "You lay out your plan and hopefully they feel your culture and want to be a part of it."

Now, after returning to Miami to contemplate his move, Long has signed up to protect Sam Bradford's blind side.